Use RTCPeerConnection instead of webkitRTCPeerConnection

chrome/test/data/extensions/api_test/tab_capture/end_to_end.js

Index: chrome/test/data/extensions/api_test/tab_capture/end_to_end.js
diff --git a/chrome/test/data/extensions/api_test/tab_capture/end_to_end.js b/chrome/test/data/extensions/api_test/tab_capture/end_to_end.js
index 087eddfc1f2316c104f264f1260b0e24352519be..e15e266800595c19c149906821786e2683f3a602 100644
--- a/chrome/test/data/extensions/api_test/tab_capture/end_to_end.js
+++ b/chrome/test/data/extensions/api_test/tab_capture/end_to_end.js
@@ -207,8 +207,8 @@ chrome.test.runTests([
             receiveStream = captureStream;
             waitForExpectedColors(colorDeviation);
           } else if (transportMethod == 'webrtc') {
-            var sender = new webkitRTCPeerConnection(null);
-            var receiver = new webkitRTCPeerConnection(null);
+            var sender = new RTCPeerConnection();
+            var receiver = new RTCPeerConnection();
             sender.onicecandidate = function (event) {
               if (event.candidate) {
                 receiver.addIceCandidate(new RTCIceCandidate(event.candidate));